three 基础库
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

169 lines
3.6 KiB

class VRButton {
static createButton( renderer, options ) {
if ( options ) {
console.error( 'THREE.VRButton: The "options" parameter has been removed. Please set the reference space type via renderer.xr.setReferenceSpaceType() instead.' );
}
const button = document.createElement( 'button' );
function showEnterVR( /*device*/ ) {
let currentSession = null;
async function onSessionStarted( session ) {
session.addEventListener( 'end', onSessionEnded );
await renderer.xr.setSession( session );
button.textContent = 'EXIT VR';
currentSession = session;
}
function onSessionEnded( /*event*/ ) {
currentSession.removeEventListener( 'end', onSessionEnded );
button.textContent = 'ENTER VR';
currentSession = null;
}
//
button.style.display = '';
button.style.cursor = 'pointer';
button.style.left = 'calc(50% - 50px)';
button.style.width = '100px';
button.textContent = 'ENTER VR';
button.onmouseenter = function () {
button.style.opacity = '1.0';
};
button.onmouseleave = function () {
button.style.opacity = '0.5';
};
button.onclick = function () {
if ( currentSession === null ) {
// WebXR's requestReferenceSpace only works if the corresponding feature
// was requested at session creation time. For simplicity, just ask for
// the interesting ones as optional features, but be aware that the
// requestReferenceSpace call will fail if it turns out to be unavailable.
// ('local' is always available for immersive sessions and doesn't need to
// be requested separately.)
const sessionInit = { optionalFeatures: [ 'local-floor', 'bounded-floor', 'hand-tracking', 'layers' ] };
navigator.xr.requestSession( 'immersive-vr', sessionInit ).then( onSessionStarted );
} else {
currentSession.end();
}
};
}
function disableButton() {
button.style.display = '';
button.style.cursor = 'auto';
button.style.left = 'calc(50% - 75px)';
button.style.width = '150px';
button.onmouseenter = null;
button.onmouseleave = null;
button.onclick = null;
}
function showWebXRNotFound() {
disableButton();
button.textContent = 'VR NOT SUPPORTED';
}
function stylizeElement( element ) {
element.style.position = 'absolute';
element.style.bottom = '20px';
element.style.padding = '12px 6px';
element.style.border = '1px solid #fff';
element.style.borderRadius = '4px';
element.style.background = 'rgba(0,0,0,0.1)';
element.style.color = '#fff';
element.style.font = 'normal 13px sans-serif';
element.style.textAlign = 'center';
element.style.opacity = '0.5';
element.style.outline = 'none';
element.style.zIndex = '999';
}
if ( 'xr' in navigator ) {
button.id = 'VRButton';
button.style.display = 'none';
stylizeElement( button );
navigator.xr.isSessionSupported( 'immersive-vr' ).then( function ( supported ) {
supported ? showEnterVR() : showWebXRNotFound();
} );
return button;
} else {
const message = document.createElement( 'a' );
if ( window.isSecureContext === false ) {
message.href = document.location.href.replace( /^http:/, 'https:' );
message.innerHTML = 'WEBXR NEEDS HTTPS'; // TODO Improve message
} else {
message.href = 'https://immersiveweb.dev/';
message.innerHTML = 'WEBXR NOT AVAILABLE';
}
message.style.left = 'calc(50% - 90px)';
message.style.width = '180px';
message.style.textDecoration = 'none';
stylizeElement( message );
return message;
}
}
}
export { VRButton };